import { computed, reactive, h } from 'vue'
import { JVxeTableMethods, JVxeTableProps } from '/@/components/jeecg/JVxeTable/src/types'
import { isEmpty } from '/@/utils/is'
import { Pagination } from 'ant-design-vue'

export function usePagination(props: JVxeTableProps, methods: JVxeTableMethods) {

  const innerPagination = reactive({
    current: 1,
    pageSize: 10,
    pageSizeOptions: ['10', '20', '30'],
    showTotal: (total, range) => {
      return range[0] + '-' + range[1] + ' 共 ' + total + ' 条'
    },
    showQuickJumper: true,
    showSizeChanger: true,
    total: 100,
  })

  const bindProps = computed(() => {
    return {
      ...innerPagination,
      ...props.pagination,
      size: props.size === 'tiny' ? 'small' : '',
    }
  })

  const boxClass = computed(() => {
    return {
      'j-vxe-pagination': true,
      'show-quick-jumper': !!bindProps.value.showQuickJumper,
    }
  })

  function handleChange(current, pageSize) {
    innerPagination.current = current
    methods.trigger('pageChange', { current, pageSize })
  }

  function handleShowSizeChange(current, pageSize) {
    innerPagination.pageSize = pageSize
    methods.trigger('pageChange', { current, pageSize })
  }

  /** 渲染分页器 */
  function renderPagination() {
    if (props.pagination && !isEmpty(props.pagination)) {
      return h('div', {
        class: boxClass.value,
      }, [
        h(Pagination, {
          ...bindProps.value,
          disabled: props.disabled,
          onChange: handleChange,
          onShowSizeChange: handleShowSizeChange,
        }),
      ])
    }
    return null
  }

  return { renderPagination }
}